Show transcribed image text 5) A dice is tossed 20 times and he results are recorded X-(6,5,5,6,3,5,6,4,2,1,6,,5,5,2,3,4,6,1,2,2) The Probability of more or equal 3 is: a)14/20 b) 0.1 c) 20% d) 60% e) None 6) In my city 35% ofthe houses are Yellow. I make a random list of 20 houses and to look at and exactly 8 are Yellow. The probability of this is: a) 38% b) 5/10 16% c) d) o.i e) None 7) The interval (7-11) is a 80% confidence interval. Calculate the standard deviation.(hint: calculate the error, look at the table middle for 80% probability and the solve error-Zs) a) 0.1 b) 1.56 c) 1.2 d) 1 e) None 8) For the last 25 days I recorded the number of times people knock at my door. The Maximum was 19 and the minimum 11 and the average was 15 times per day, build a 95% confidence interval. a) (11,23) b) (15.16,17.51) c) (15.1,17.6) d) (14.2,15.8) e) None For a normally distributed random variable with average 1000 and standard deviation 100 a 68% confidence interval will look like this: a) (1000,1100) b) (900,2100) c) 68% d) (900, 1100) e) None 9)

5) A dice is tossed 20 times and he results are recorded X-(6,5,5,6,3,5,6,4,2,1,6,,5,5,2,3,4,6,1,2,2) The Probability of more or equal 3 is: a)14/20 b) 0.1 c) 20% d) 60% e) None 6) In my city 35% ofthe houses are Yellow. I make a random list of 20 houses and to look at and exactly 8 are Yellow. The probability of this is: a) 38% b) 5/10 16% c) d) o.i e) None 7) The interval (7-11) is a 80% confidence interval. Calculate the standard deviation.(hint: calculate the error, look at the table middle for 80% probability and the solve error-Zs) a) 0.1 b) 1.56 c) 1.2 d) 1 e) None 8) For the last 25 days I recorded the number of times people knock at my door. The Maximum was 19 and the minimum 11 and the average was 15 times per day, build a 95% confidence interval. a) (11,23) b) (15.16,17.51) c) (15.1,17.6) d) (14.2,15.8) e) None For a normally distributed random variable with average 1000 and standard deviation 100 a 68% confidence interval will look like this: a) (1000,1100) b) (900,2100) c) 68% d) (900, 1100) e) None 9)